Structural,Morphological,Optical and Photoluminescence Properties of Hafnium Oxide Nanoparticles Synthesized by Sol-Gel Method

摘要

The novel HfO2 nanoparticles have been synthesized using sol-gel method.The samples were characterized by X-ray powder diffraction,scanning electron microscopy with elemental analysis,Fourier transform infrared spectrometer,UV-visible spectroscopy.The XRD patterns revealed the transition of cubic to monoclinic phase and calculated particle sizes are 34.92 and 35.66 nm in cubic phase and increase in molar concentration increased the size to 60.31 and 60.33 nm.The optical band gap energy decrease with increasing molar concentrations.We expect that this sol-gel method may be extended to the preparation of nanostructures of other kinds of metal oxides.